番茄叶片净光合速率的梯度分布特征是上部最大，中下部则迅速下降。
The value of photosynthesis rate of tomato is the greatest at the top of hedge, with quickly decreasing at middle and lower part.
番茄叶片净光合速率的梯度分布特征是上部最大，中下部则迅速下降。
The value of photosynthesis rate of tomato is the greatest at the top of hedge, with quickly decreasing at middle and lower part.
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